master updated (8e103eb -> 570afde)

[Stefan Kangas]

skangas pushed a change to branch master.

      from  8e103eb   Speed up xref rendering for matches on very long lines
       new  4a112fd   Add new face 'help-key-binding' for keybindings in help
       new  570afde   * lisp/help-mode.el (help-mode-tool-bar-map): Fix 
tooltips.


Summary of changes:
 etc/NEWS                |   9 ++
 lisp/faces.el           |  17 ++++
 lisp/help-fns.el        |  21 +++--
 lisp/help-macro.el      | 224 ++++++++++++++++++++++++------------------------
 lisp/help-mode.el       |   4 +-
 lisp/help.el            | 153 ++++++++++++++++++---------------
 lisp/isearch.el         |   8 +-
 lisp/tooltip.el         |   7 +-
 src/keymap.c            |  25 +++++-
 test/lisp/help-tests.el |  24 +++++-
 10 files changed, 291 insertions(+), 201 deletions(-)